function pickExclude(obj, keys) {
	// 某些情况下，type可能会为
	if (!['[object Object]', '[object File]'].includes(Object.prototype.toString.call(obj))) {
		return {}
	}
	return Object.keys(obj).reduce((prev, key) => {
		if (!keys.includes(key)) {
			prev[key] = obj[key]
		}
		return prev
	}, {})
}

function formatImage(res) {
	return res.tempFiles.map((item) => ({
		...pickExclude(item, ['path']),
		type: 'image',
		url: item.path,
		thumb: item.path,
		size: item.size,
		// #ifdef H5
		name: item.name
		// #endif
	}))
}

function formatVideo(res) {
	return [{
		...pickExclude(res, ['tempFilePath', 'thumbTempFilePath', 'errMsg']),
		type: 'video',
		url: res.tempFilePath,
		thumb: res.thumbTempFilePath,
		size: res.size,
		// #ifdef H5
		name: res.name
		// #endif
	}]
}

function formatMedia(res) {
	return res.tempFiles.map((item) => ({
		...pickExclude(item, ['fileType', 'thumbTempFilePath', 'tempFilePath']),
		type: res.type,
		url: item.tempFilePath,
		thumb: res.type === 'video' ? item.thumbTempFilePath : item.tempFilePath,
		size: item.size
	}))
}

function formatFile(res) {
	return res.tempFiles.map((item) => ({
		...pickExclude(item, ['path']),
		url: item.path,
		size: item.size,
		// #ifdef H5
		name: item.name,
		type: item.type
		// #endif 
	}))
}
export function chooseFile({
	accept,
	multiple,
	capture,
	compressed,
	maxDuration,
	sizeType,
	camera,
	maxCount
}) {
	return new Promise((resolve, reject) => {
		switch (accept) {
			case 'image':
				uni.chooseImage({
					count: multiple ? Math.min(maxCount, 9) : 1,
					sourceType: capture,
					sizeType,
					success: (res) => resolve(formatImage(res)),
					fail: reject,
				})
				break
				// #ifdef MP-WEIXIN
				// 只有微信小程序才支持chooseMedia接口
			case 'media':
				wx.chooseMedia({
					count: multiple ? Math.min(maxCount, 9) : 1,
					sourceType: capture,
					maxDuration,
					sizeType,
					camera,
					success: (res) => resolve(formatMedia(res)),
					fail: reject
				})
				break
				// #endif
			case 'video':
				uni.chooseVideo({
					sourceType: capture,
					compressed,
					maxDuration,
					camera,
					success: (res) => resolve(formatVideo(res)),
					fail: reject
				})
				break
				// #ifdef MP-WEIXIN || H5
				// 只有微信小程序才支持chooseMessageFile接口
			case 'file':
				// #ifdef MP-WEIXIN
				wx.chooseMessageFile({
					count: multiple ? maxCount : 1,
					type: accept,
					success: (res) => resolve(formatFile(res)),
					fail: reject
				})
				// #endif
				// #ifdef H5
				// 需要hx2.9.9以上才支持uni.chooseFile
				uni.chooseFile({
					count: multiple ? maxCount : 1,
					type: accept,
					success: (res) => resolve(formatFile(res)),
					fail: reject
				})
				// #endif
				break
				// #endif
			default:
				// 此为保底选项，在accept不为上面任意一项的时候选取全部文件
				// #ifdef MP-WEIXIN
				wx.chooseMessageFile({
					count: multiple ? maxCount : 1,
					type: 'all',
					success: (res) => resolve(formatFile(res)),
					fail: reject
				})
				// #endif
				// #ifdef H5
				// 需要hx2.9.9以上才支持uni.chooseFile
				uni.chooseFile({
					count: multiple ? maxCount : 1,
					type: 'all',
					success: (res) => resolve(formatFile(res)),
					fail: reject
				})
				// #endif
		}
	})
}
